Trends in the use of renal replacement therapy modality in intensive care unit: a 7 year study

Figures & data

Table 1. Clinical characteristics.

Variable	Total (n = 72,005)
Age, year (SD)	63 ± 17
Male sex (%)	41,633 (58)
White (%)	66,007 (92)
BMI (SD)	29.8 ± 8.0
End-stage renal disease (%)	4480 (6)
ICU admission type^a (%)
Cardiac SICU	15,631 (22)
CCU	8807 (12)
MICU	16,863 (23)
SICU	19,997 (28)
Mixed ICU	10,707 (15)
Admission SOFA score^b (IQR)	4 (2–7)
Admission APACHE III score (SD)	67 ± 26
MV use in ICU (%)	28,844 (40)
ICU length of stay, day (IQR)^b	2 (2–4)
ICU mortality (%)	2755 (4)
In-hospital mortality (%)	4896 (7)

Notes: Continuous variable are reported as mean ± SD; categorical variables are reported as count (%) if not indicate.

^aThe first ICU admission unit in case of ICU transfer.

^bData are shown as median (IQR).

Figure 1. Trend of specific dialysis modality use in all ICUs from 2007 to 2013.

Table 2. Proportion of ICU with dialysis use divided by total ICU admission and proportion of total ICU day on dialysis over total ICU day.

ICU	Total ICU	Total ICU with dialysis	%ICU with dialysis	Total ICU day	Total ICU day on dialysis	%ICU day on dialysis)
All	72,005	4110	5.7	272,271	21,159	7.8
Admission year
2007	10,070	619	6.1	40,121	3547	8.8
2008	10,373	564	5.4	39,956	2818	7.1
2009	10,006	544	5.4	37,815	2669	7.1
2010	10,265	576	5.6	38,390	2833	7.4
2011	10,682	666	6.2	41,601	3491	8.4
2012	10,473	603	5.8	38,187	2955	7.7
2013	10,136	538	5.3	36,201	2846	7.9

Notes: %ICU with dialysis use = total ICU with dialysis use/total ICU. %ICU day on dialysis = total ICU day on dialysis/ICU day.

Table 3. The proportion of specific dialysis modality use in ICUs from 2007 to 2013.

		ICU admission year
Vasopressor	All	2007	2008	2009	2010	2011	2012	2013
P (IHD)	0.49	0.47	0.49	0.49	0.53	0.50	0.50	0.47
P (CRRT)	0.52	0.54	0.51	0.52	0.49	0.51	0.51	0.54

Notes: P (IHD) = total ICU day IHD/total ICU day on dialysis. P (CRRT) = total ICU day on continuous renal replacement therapy/ total ICU day on dialysis.

Table 4. The correlation between the choice of dialysis modality and vasopressor use on ICU days with dialysis.

	Dialysis modality used
	IHD	Both	CRRT	Total
(a) The use of vasopressor
Vasopressor use
No	7292 (69.6)	64 (0.6)	3116 (29.8)	10,472
Yes	2913 (27.3)	133 (1.2)	7641 (71.5)	10,687
Total	10,205 (48)	197 (0.9)	10,757 (50.8)	21,159
(b) The number of vasopressor use
Number of vasopressor
0	7292 (69.6)	64 (0.6)	3116 (29.8)	10,472
1	2077 (36.5)	59 (1.0)	3552 (62.5)	5688
2	704 (18.9)	49 (1.3)	2981 (79.8)	3734
3	124 (10.8)	20 (1.7)	1009 (87.5)	1153
4	7 (7.4)	5 (5.3)	83 (87.4)	95
5	1 (5.9)	0 (0)	16 (94.1)	17
Total	10,205 (48)	197 (0.9)	10,757 (50.8)	21,159

p < 0.001.